运行火花斯卡拉例如失败 [英] Running spark scala example fails

问题描述

我是新来的火星，scalla。我已经创建了一个SBT斯卡拉的IntelliJ项目，并添加几行build.sbt。

I'm new to both spark and scalla. I've created an IntelliJ scala project with sbt and added a few lines to build.sbt.

name := "test-one"

version := "1.0"

scalaVersion := "2.11.2"

libraryDependencies += "org.apache.spark" % "spark-core_2.10" % "1.1.0"

我的斯卡拉的版本是2.10.4但这个问题也会出现2.11.2

My version of scala is 2.10.4 but this problem also occurs with 2.11.2

Exception in thread "main" java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce$class
    at akka.util.Collections$EmptyImmutableSeq$.<init>(Collections.scala:15)
    at akka.util.Collections$EmptyImmutableSeq$.<clinit>(Collections.scala)
    at akka.japi.Util$.immutableSeq(JavaAPI.scala:209)
    at akka.actor.ActorSystem$Settings.<init>(ActorSystem.scala:150)
    at akka.actor.ActorSystemImpl.<init>(ActorSystem.scala:470)
    at akka.actor.ActorSystem$.apply(ActorSystem.scala:111)
    at akka.actor.ActorSystem$.apply(ActorSystem.scala:104)
    at org.apache.spark.util.AkkaUtils$.org$apache$spark$util$AkkaUtils$$doCreateActorSystem(AkkaUtils.scala:121)
    at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:54)
    at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:53)
    at org.apache.spark.util.Utils$$anonfun$startServiceOnPort$1.apply$mcVI$sp(Utils.scala:1446)
    at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:160)
    at org.apache.spark.util.Utils$.startServiceOnPort(Utils.scala:1442)
    at org.apache.spark.util.AkkaUtils$.createActorSystem(AkkaUtils.scala:56)
    at org.apache.spark.SparkEnv$.create(SparkEnv.scala:153)
    at org.apache.spark.SparkContext.<init>(SparkContext.scala:203)
    at TweeProcessor$.main(TweeProcessor.scala:10)
    at TweeProcessor.main(TweeProcessor.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: java.lang.ClassNotFoundException: scala.collection.GenTraversableOnce$class
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 23 more

试了

看在线，大部分答案指向版本的API和Scala版本之间的不匹配，但没有具体的火花。

Tried looking up online, most answers point to a mismatch between api versions and scala version, but none are specific to spark.

推荐答案

火花core_2.10 建为使用2.10.x版本斯卡拉的。您应该使用

spark-core_2.10 is built for use with 2.10.x versions of scala. You should use

libraryDependencies += "org.apache.spark" %% "spark-core" % "1.1.0"

这将选择适合您的Scala版本的正确_2.10或_2.11版本。

which will select the correct _2.10 or _2.11 version for your scala version.

另外，还要确保你对编译Scala和火花的，你正在运行这个集群上的那些相同版本。

Also make sure you're compiling against the same versions of scala and spark as the ones on the cluster where you're running this.

这篇关于运行火花斯卡拉例如失败的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！